Effects of barium concentration on the radiopacity and biomechanics of bone cement: experimental study

Purpose This study was undertaken to evaluate the changes in the radiopacity and mechanics of polymethylmethacrylate (PMMA) bone cement with the addition of barium. Materials and methods Barium sulfate powder was added to a PMMA bone cement with an initial 10% barium concentration. The changes in ra...

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Bibliographic Details
Published in:Japanese journal of radiology 2008-11, Vol.26 (9), p.533-538
Main Authors: Makita, Masashi, Yamakado, Koichiro, Nakatsuka, Atsuhiro, Takaki, Haruyuki, Inaba, Tadashi, Oshima, Fumiyoshi, Katayama, Hidetaka, Takeda, Kan
Format: Article
Language:English
Subjects:
Barium Sulfate - chemistry
Biomechanical Phenomena
Bone Cements - chemistry
Compressive Strength
Image Processing, Computer-Assisted - methods
Imaging
Materials Testing - methods
Materials Testing - standards
Medicine
Medicine & Public Health
Nuclear Medicine
Original Article
Polymethyl Methacrylate - chemistry
Radiographic Image Enhancement - methods
Radiology
Radiotherapy
Stress, Mechanical
Tensile Strength
Tomography Scanners, X-Ray Computed
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Summary:Purpose This study was undertaken to evaluate the changes in the radiopacity and mechanics of polymethylmethacrylate (PMMA) bone cement with the addition of barium. Materials and methods Barium sulfate powder was added to a PMMA bone cement with an initial 10% barium concentration. The changes in radiopacity and strength were evaluated by testing cement blocks containing four barium concentrations (10%, 20%, 30%, 40%). Radiopacity was evaluated by measuring the computed tomography (CT) values of the bone cement, and strength was evaluated by compressive, three-point bending, and impact load tests. Results CT values increased in proportion to the barium concentration. The compressive load test showed that cement with a 40% barium concentration was significantly more fragile than cement with lower barium concentrations. The three-point bending load test showed that the cement became more fragile in proportion to the barium concentration. The impact load test showed that cement with 30% and 40% barium concentrations was significantly more fragile than cement with 10% and 20% barium concentrations. Conclusion Radiopacity is increased and strength is reduced by adding increasing concentrations of barium powder to bone cement. The results of the present study suggest that adding barium permits the radiopacity and strength of bone cement to be adjusted in clinical practice.
ISSN:0288-2043
1867-1071
1862-5274
1867-108X
DOI:10.1007/s11604-008-0269-0